Producing comparison report fails on some exercises

[PasiSa]

As noticed in Y1 course, comparison report fails to complete on some exercises, while succeeds on others. In failed cases the exercise list shows 1 invalid submissions, while rest remain in pending state. Need to investigate what causes this (out of memory? or something else?) and then fix it.

[markkuriekkinen]

I consider this a duplicate of #13, though it is not yet certain if the memory error causes all these failures in the report.

[PasiSa]

For the record, I don't think this was duplicate of #13 , so we should keep it still open

[markkuriekkinen]

For the record, I don't think this was duplicate of #13 , so we should keep it still open

Yes, correct. This issue focused on that simple one-line bug, using non-existent attribute of an exception. #13 is about the potential excessive memory consumption.